Improvement in wrenches



'the movable jaw and lock it to the work when thrust me ELIAS BEACH, orTITUsvrLLE, PENusrLvANIA.y

Letters Patent No. 112,109, dated February 2,8, 1871.

IMPROVEMENT IN wR-Eivcui-ua's.

The Sc'hedule'referred tain these Letters Patent and making pai-blot'4the saune.

-known as.pipe-wrenches,and in which .the movable jaw is operated by apivoted lever-handle ;4 and It consists in arranging and supporting themovable jaw and its cogged shank between guides of the fixed jaw` djustiug devices, for the purposeof allowing the mt able jaw to beadjusted at different angles to suit diii'erent sizes of pipes without,inter-v fering with the opening and closing movement oi' the jaw, thesaid adjusting devices also serving t clamp desired.

Figure l represents a5 section of -a pipe-wrench embracing myimprovement.

Figure 2 represents awrench having a different form of jaw.

In the accompanying drawing- The iixed jaw A is made with a stock, B,which forms guides O for the -movable jaw D, and supports for theadjusting devices. v l

The movable jaw D is of the nippel' form, and its shank hascogs a tointerlock with the cogs bV of the pivoted lever E.

This lever is pivoted to the rear end of the guides (l, and the cog'gedshank F is held in gear with the ccgged end ot' thelever E by means ol'a roller, G, also secured between the guides C.

The adjusting devices in the instance represented consist of two screws,H and I, passing through the. stock B -and guides O, so as to touch andsustain the movable jaw D in whatever angle it may be adjusted by saidscrews, with .respect to the size ofA pipe and the point at which theDipper-jaw is desired tor'bite thereon.

The points of the adjusting screws H andl I, while thus serving asguides to-the shank, serve also as pivots on which the Dipper-jaw isadjusted to increase or'diminish its distance from the stock B of thefixed jaw.

D will slide between them without the` least binding in putting the jawon and taking it off from the work. They'also alordmeansfor clamping thejaw D and holding' it tightly in its bite upon the work, and thus affordopportunity for changing hands and-releasing the force upon the leverwithout releasing the bite of the jaw or 'allowing' it to slip over thework. l

The roller G holds the cogged jaw in connection with the 'cogged leverE, so that the jaw is opened and closed upon the work by the -samehandle but, when desired to disengage the 'cogs b of- Athe lever E fromthose ofthe-shank, the former is simply turned at right augles,.ornearly so, to thev stock, and the biting-jaw can be moved in and out, asdesired.

In tig. 2 of the drawing I have shown acogged jaw adapted to embrace andhold the pipe by.a grasp, and whichis operated by a direct motion.` ofthe lever without adjusting devices, and in which the graspingjawcan'beremoved and others substituted for dilferent sizes of pipes. Y

Having described my invention,

l.V The combination of the movable jawD with the guides() of the fixedjaw A andthe adjusting devices H and I, as described.

2. The combination ol' a` movable cogged jaw D, made adjustable, asdescribed, with the cogged lever-l handle ll, holding-roller G, andstock B C, ol' the iixed jaw A, as described.

3. The fixed jaw A, having a stock, B C, arranged to form guides U tothe movable jaw-D, supports for j the adj listing-screws H l, and forthc actuating-lever E, as described. i

In testimony whereof I have hereunto signed my name.

ELIAS BEACH. Witnesses:

A. E. H.V JouxsoN, J. W. Hanni/rox JOUNSON.

These bearing points are so arranged that the jaw

